Electric heater



Feb. 17; 1925.

E. N. LIGHTFOOT ET AL ELECTRIC HEATER Filed Sept.- 24, 1920 3 SheetS-Shtl fi m/722373 AM i m I V .WWWHN 1,526,352 E. N. LIGHTFOOT ET AL ELECTRICHEATER Filed Sept. 24, 1920 3 Sheets-Sheet 2 y Z Z2 Z7 Av 73 iZmf/ZZZBFeb. 17. 1925. 1,526,352

E. N. LIGHTFOOT ET AL ELECTRIC HEATER v Filed Sept. 24. 1920 sSheetS-Sheet 5 Patented Feb. 17, 1925.

UNITED STATES PATENT OFFICE.

EDWIN N. LIGHTFOOT, OF NEW YORK, N. Y., AND ALVA T. SMITH, OF NEWARK,NEW

JERSEY, ASSIGNORS TO THE GUTL-Elt-HAJVLMER MFG. ('10., OF MILWAUKEE,WISCON- SIN, A CORPORATION OF WISCONSIN.

ELECTRIC HEATER.

Application filed September 24, 1920. Serial N0. 412,459.

To all whom it may con-cm.-

Be it known that we, EDWIN N. Liorrrroo'r and .ALVA T. SMITH, citizensof the United States, residing, respectively, at New York, in the countyof Bronx and. State of New York. and Newark, in the county of Essex andState of New Jersey, have invented new and useful Improvements inElectric 7 respectively are formed in the bowl 1. Thes rib are formed bypressing the same from the bowl and may extend either inwardly oroutwardly therefrom.

The ribs stiffen the bowl, thereby allowing the use of thinner materialfor the bowl. Other means may, of course, be employed for stiffening thebowl. For example, small Heaters, of which the following is aspecifidepressions instead of ribs may be formed 0 lo cation. in thebowl.

This invention relates to an electric The ribs also serve to reflectheat and heater. light at various angles from'the reflector.

The electric heater, to which the invention For example, the ribs causethe heat develparticularly applies, comprises in general a oped in theresistor to be reflected through 65 resistor associated with areflector. a wide angle, so that the heat Will be radi- An object of theinvention is to provide ated to objects or persons at a considerable animproved electric heater. distance to one side or the other of theAnother object is to provide a simple, heater. durable electric heaterof pleasing appear- Light is reflected by the ribs through a 70 ance andat a low cost. wide angle, and the radiating ribs appear Another objectis to increase the heat raas rays of light, thus improving theappeardiating qualities. ance of the reflector. To persons at a con-Other objects and advantages will hereinsiderable distance to eitherside of the heater, after appear. the heater appears as a brilliant orglowing 75 In the drawings, which illustrate an emobject. thus relievingthe deadness of the bodiment of the invention, usual heater of thischaracter.

Figure 1 is afront elevation of an elec- The reflector bowl 1 has anoutwardly extric heater with part of the guard wires retending octagonalflange 8, so formed by moved; bending the sections 9 thereof at an angleso Fig. 2 is a vertical section on line 2-2 of of 90 thereto. Theserearwardly extending Fi 1; sections or flanges 9 brace and stiffen there- Fig. 3 is an enlarged vertical section flector and its flange 8.through the resistor and terminal support The ribbed reflector bowl withits outand cover therefor; wardly extending flange and rearwardly ex- 85Fig. 1 is a rear elevation of the terminals tending stiffening sectionsmay be readily and support therefor, the protective cover manufactured.A reflector thus formed may being shown in ection; be made of thinnermaterial than when no Fig. 5 is a front elevation, partly insecstiffening or rearwardly extending flanges tion of the resistor andits support; are provided, and the necessary rigidity se- 90 Fig. 6 is avertical section on line 6--6 of cured.

Fig. 2; and The front face of the outwardly extend- Fig. 7 is a sectionon line 7-7 of Fig. 1. ing flange 8 may be provided with a plu- Theelectric heater comprises a reflector rality of ornamental lugs 10suitably fasbowl 1, a supporting base 2 therefor and a tened thereto, asby welding or brazing. 95

resistor 3 arranged within the bowl and pro- A handle 11 fastened to thetwo upper tected by av cage 4. rearwardly extending flanges 9 by rivetsor The reflector bowl 1 is formed of suitable other suitable means,provides ready means material having a. polished inner surface formoving the electric heater. for reflecting the heat rays. The reflectoris adjustably mounted on 100 A plurality of raised radial ribs 5 joinedat inner and outer ends by similar ribs 6 and the base 2 by a hingedconnection. This hinged connection includes a bracket 12 secured to thetwo lower rearwardly extending, flanges 9 by rivets or other suitablemeans, and a standard 13 secured to the base 2 by a screw or othersuitable means. The bracket 12 is pivotally connected to the standard 13by a pivot pin 14.

The resistor 3 formed into a helix is seated in a helical grooveprovided on the periphery of a tubular insulating support 15. Thesupport 15 is fastened to an insulating base 16 by a bolt or othersuitable means.

The insulating base 16 is positioned in a central opening in thereflector bowl 1 and is fastened thereto by means of a clamping ring 17and screws 18. Other means may, of course, be employed for fastening theinsulating base to the reflector bowl.

The tubular resistor support 15 is positioned at the centre of the base16 which is held in the centrally disposed opening in the reflector.Thus the helical resistor is coiled about an axis which is the axis ofthe reflector.

Two L-shaped brackets 19 forming terminals for the electric heater aremounted in the insulating base 16 and are fastened thereto by clampingeyelets 20.

The ends of the resistor are straightened and are extended through theinterior of the tubular support 15 to openings near the inner endthereof. The ends of the resistor then extend through the eyelets 20 andare "with an insulating bushing 23 held therein by a clamping ring 24.-seated in a groove in the bushing.

The protective cage 4 comprises a plurality of arched guard wires 25fastened at their diverging ends to a flat ring 26 and at theirconverging ends to a hub 27. The hub 27 is provided with radial openingsthrough which the converging ends of the guard wires 25 extend into anannular groove 28. The converging ends of the guard wires 25 are held inthe hub 27, by solder with which the annular groove 28 is filled afterthe ends of the guard wires are arranged therein. Other means may, ofcourse, be employed to fasten the guard wires to the hub.

The protectivecage 4 may be fastened to the reflector by means of rivetsor other suitable means extending through the flat ing 26 and theoutwardly extending 1- age 8.

ing stiffening ribs, an outwardly extending flat peripheral flange andadditional stiffening flanges projecting rearwardly from said peripheralflange, and a bracket secured to certain of said stiffening flanges toprovide for pivotal mounting of said reflector upon a suitable base.

' 3. An electric heater comprising a base, a reflector bowl having anexternal flange at the rim thereof, stiffening flanges extendingrearwardly from the periphery of the external flange, a resistorpositioned in spaced relation to the reflector bowl, and a bracketrigidly fastened to two of the rearwardly extending flanges andpivotally connected to the base.

4. An electric heater comprising a base, a reflector bowl having anexternal flange at the rim thereof, stiffening flanges extendingrearwardly from the periphery of the external flange, a resistorpositioned in spaced relation to the reflector bowl, a bracket rigidlyfastened to two of the rearwardly extending flanges at the bottom of thereflector bowl and pivotally connected to the base, and a handlefastened to two of the rearwardly extending flanges at the top of thereflector bowl. Y Q

5. An electric heater comprising a reflector having a central opening,an insulating plate secured to the back 'of said reflectorcircumfe-rentially of said opening and having an integral partpenetrating the latter, a heater element base and circuit terminalssecured directly to opposite sides of said plate to extend respectivelyupon opposite sides of said reflector and a protective cover for saidterminals.

6. A reflector for an electric heater comprising a bowl having radiallyextending heat and light reflecting ribs formed therein, an outwardlyextending flange at the rim of the bowl, and a plurality of rearwardlyextendin stiffening flanges for the outwardly extending flange.

In witness whereof, we have hereunto subscribed our names.

EDWIN N. LIGHTFOOT. I ALVA T. SMITH.

